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cc-3447: pypo telnet class

This commit is contained in:
Martin Konecny 2012-03-15 23:14:19 -04:00
parent 275fc7f987
commit c8c9e46228
3 changed files with 132 additions and 74 deletions
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8
python_apps/pypo/pypocli.py
View File

@ -12,6 +12,8 @@ import logging.config
import logging.handlers
from Queue import Queue
from threading import Lock
from pypopush import PypoPush
from pypofetch import PypoFetch
from pypofile import PypoFile
@ -125,6 +127,8 @@ if __name__ == '__main__':
recorder_q = Queue()
pypoPush_q = Queue()
telnet_lock = Lock()
"""
This queue is shared between pypo-fetch and pypo-file, where pypo-file
is the receiver. Pypo-fetch will send every schedule it gets to pypo-file
@ -141,11 +145,11 @@ if __name__ == '__main__':
pfile.daemon = True
pfile.start()
pf = PypoFetch(pypoFetch_q, pypoPush_q, media_q)
pf = PypoFetch(pypoFetch_q, pypoPush_q, media_q, telnet_lock)
pf.daemon = True
pf.start()
pp = PypoPush(pypoPush_q)
pp = PypoPush(pypoPush_q, telnet_lock)
pp.daemon = True
pp.start()

84
python_apps/pypo/pypofetch.py
View File

@ -12,6 +12,8 @@ import telnetlib
import math
import copy
from threading import Thread
from threading import Lock
from subprocess import Popen, PIPE
from datetime import datetime
from datetime import timedelta
@ -38,13 +40,15 @@ except Exception, e:
sys.exit()
class PypoFetch(Thread):
def __init__(self, pypoFetch_q, pypoPush_q, media_q):
def __init__(self, pypoFetch_q, pypoPush_q, media_q, telnet_lock):
Thread.__init__(self)
self.api_client = api_client.api_client_factory(config)
self.fetch_queue = pypoFetch_q
self.push_queue = pypoPush_q
self.media_prepare_queue = media_q
self.telnet_lock = telnet_lock
self.logger = logging.getLogger();
self.cache_dir = os.path.join(config["cache_dir"], "scheduler")
@ -113,14 +117,16 @@ class PypoFetch(Thread):
elif(sourcename == "live_dj"):
command += "live_dj_harbor.kick\n"
self.telnet_lock.acquire()
try:
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
tn.write(command)
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.debug(e)
self.logger.debug('Could not connect to liquidsoap')
self.logger.error(str(e))
finally:
self.telnet_lock.release()
def switch_source(self, sourcename, status):
self.logger.debug('Switching source: %s to "%s" status', sourcename, status)
@ -137,14 +143,16 @@ class PypoFetch(Thread):
else:
command += "stop\n"
self.telnet_lock.acquire()
try:
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
tn.write(command)
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.debug(e)
self.logger.debug('Could not connect to liquidsoap')
self.logger.error(str(e))
finally:
self.telnet_lock.release()
"""
This check current switch status from Airtime and update the status
@ -280,17 +288,25 @@ class PypoFetch(Thread):
updates the status of liquidsoap connection to the streaming server
This fucntion updates the bootup time variable in liquidsoap script
"""
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
# update the boot up time of liquidsoap. Since liquidsoap is not restarting,
# we are manually adjusting the bootup time variable so the status msg will get
# updated.
current_time = time.time()
boot_up_time_command = "vars.bootup_time "+str(current_time)+"\n"
tn.write(boot_up_time_command)
tn.write("streams.connection_status\n")
tn.write('exit\n')
output = tn.read_all()
self.telnet_lock.acquire()
try:
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
# update the boot up time of liquidsoap. Since liquidsoap is not restarting,
# we are manually adjusting the bootup time variable so the status msg will get
# updated.
current_time = time.time()
boot_up_time_command = "vars.bootup_time "+str(current_time)+"\n"
tn.write(boot_up_time_command)
tn.write("streams.connection_status\n")
tn.write('exit\n')
output = tn.read_all()
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
output_list = output.split("\r\n")
stream_info = output_list[2]
@ -313,12 +329,19 @@ class PypoFetch(Thread):
try:
self.logger.info(LS_HOST)
self.logger.info(LS_PORT)
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
command = ('vars.stream_metadata_type %s\n' % stream_format).encode('utf-8')
self.logger.info(command)
tn.write(command)
tn.write('exit\n')
tn.read_all()
self.telnet_lock.acquire()
try:
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
command = ('vars.stream_metadata_type %s\n' % stream_format).encode('utf-8')
self.logger.info(command)
tn.write(command)
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
except Exception, e:
self.logger.error("Exception %s", e)
@ -328,12 +351,19 @@ class PypoFetch(Thread):
try:
self.logger.info(LS_HOST)
self.logger.info(LS_PORT)
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
command = ('vars.station_name %s\n' % station_name).encode('utf-8')
self.logger.info(command)
tn.write(command)
tn.write('exit\n')
tn.read_all()
self.telnet_lock.acquire()
try:
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
command = ('vars.station_name %s\n' % station_name).encode('utf-8')
self.logger.info(command)
tn.write(command)
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
except Exception, e:
self.logger.error("Exception %s", e)

114
python_apps/pypo/pypopush.py
View File

@ -18,6 +18,8 @@ retrieved ("first-in, first-out"); however, lists are not efficient for this pur
from collections import deque
from threading import Thread
from threading import Lock
from api_clients import api_client
from configobj import ConfigObj
@ -38,12 +40,14 @@ except Exception, e:
sys.exit()
class PypoPush(Thread):
def __init__(self, q):
def __init__(self, q, telnet_lock):
Thread.__init__(self)
self.api_client = api_client.api_client_factory(config)
self.queue = q
self.media = dict()
self.telnet_lock = telnet_lock
self.liquidsoap_state_play = True
self.push_ahead = 10
@ -161,13 +165,20 @@ class PypoPush(Thread):
This function connects to Liquidsoap to find what media items are in its queue.
"""
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
self.telnet_lock.acquire()
msg = 'queue.queue\n'
tn.write(msg)
response = tn.read_until("\r\n").strip(" \r\n")
tn.write('exit\n')
tn.read_all()
try:
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
msg = 'queue.queue\n'
tn.write(msg)
response = tn.read_until("\r\n").strip(" \r\n")
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
liquidsoap_queue_approx = []
@ -243,21 +254,28 @@ class PypoPush(Thread):
if 'queue_id' in media_item:
queue_id = media_item['queue_id']
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
msg = "queue.remove %s\n" % queue_id
tn.write(msg)
response = tn.read_until("\r\n").strip("\r\n")
if "No such request in my queue" in response:
"""
Cannot remove because Liquidsoap started playing the item. Need
to use source.skip instead
"""
msg = "source.skip"
tn.write("source.skip")
self.telnet_lock.acquire()
try:
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
msg = "queue.remove %s\n" % queue_id
tn.write(msg)
response = tn.read_until("\r\n").strip("\r\n")
if "No such request in my queue" in response:
"""
Cannot remove because Liquidsoap started playing the item. Need
to use source.skip instead
"""
msg = "source.skip"
tn.write("source.skip")
tn.write("exit\n")
tn.read_all()
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
tn.write("exit\n")
tn.read_all()
else:
self.logger.error("'queue_id' key doesn't exist in media_item dict()")
@ -294,30 +312,36 @@ class PypoPush(Thread):
about which show is playing.
"""
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
#tn.write(("vars.pypo_data %s\n"%liquidsoap_data["schedule_id"]).encode('utf-8'))
annotation = media_item['annotation']
msg = 'queue.push %s\n' % annotation.encode('utf-8')
self.logger.debug(msg)
tn.write(msg)
queue_id = tn.read_until("\r\n").strip("\r\n")
#remember the media_item's queue id which we may use
#later if we need to remove it from the queue.
media_item['queue_id'] = queue_id
#add media_item to the end of our queue
self.pushed_objects[queue_id] = media_item
show_name = media_item['show_name']
msg = 'vars.show_name %s\n' % show_name.encode('utf-8')
tn.write(msg)
self.logger.debug(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
self.telnet_lock.acquire()
try:
tn = telnetlib.Telnet(LS_HOST, LS_PORT)
#tn.write(("vars.pypo_data %s\n"%liquidsoap_data["schedule_id"]).encode('utf-8'))
annotation = media_item['annotation']
msg = 'queue.push %s\n' % annotation.encode('utf-8')
self.logger.debug(msg)
tn.write(msg)
queue_id = tn.read_until("\r\n").strip("\r\n")
#remember the media_item's queue id which we may use
#later if we need to remove it from the queue.
media_item['queue_id'] = queue_id
#add media_item to the end of our queue
self.pushed_objects[queue_id] = media_item
show_name = media_item['show_name']
msg = 'vars.show_name %s\n' % show_name.encode('utf-8')
tn.write(msg)
self.logger.debug(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
def run(self):
loops = 0